--- template.conditional-styles.inc.orig	2010-06-02 16:48:45.000000000 +0200
+++ template.conditional-styles.inc	2010-06-02 16:49:00.000000000 +0200
@@ -94,11 +94,14 @@ function _conditional_styles_theme($exis
         }
       }
       // Save the stylesheets for later retrieval.
-      if ($conditional_styles) {
-        variable_set('conditional_styles_' . $theme, $conditional_styles);
-      }
-      else {
-        variable_del('conditional_styles_' . $theme);
+      if(db_is_active())
+      {
+        if ($conditional_styles) {
+          variable_set('conditional_styles_' . $theme, $conditional_styles);
+        }
+        else {
+          variable_del('conditional_styles_' . $theme);
+        }
       }
     }
   }